COVID-19 and Search Interest On Google

 



Anosmia, or the loss of smell, is one of the most common manifestations of COVID-19, and one of the symptoms that differentiates it from other diseases with similar characteristics. 

As it is clearly evident in the graph, during the first months of the pandemic when few things about COVID-19 were known and testing was scarce, many individuals noticed the loss of smell and turned to the internet to find out what was wrong. The magnitude of these searches at the end of March 2020, translated a few weeks later to hundreds of deaths. 

The story repeated itself many times, throughout all COVID-19 waves. People noticed they couldn't smell, searched it on Google, and then a few days later cases were up, and a few weeks later deaths rose as well. 

The average interval between the spikes on Google Search Trends (GST) and Cases is about 9 days, while between GST and Deaths is 18 days. Thus Google search interest can be considered a good indicator of future Covid-19 outbreaks. As to what lies ahead? The search curve has unfortunately an upwards trajectory. 

On the Y-axis you can find the number of Cases, Deaths and Google Searches. Numbers for Google searches represent search interest relative to the highest point on the chart for the given region and time. A value of 100 is the peak popularity for the term. A value of 50 means that the term is half as popular. The values on this graph never reached a 100, as the search interest line, along with the cases and deaths lines, are 7-Day moving averages. 


You can find all the data below. All Values are 7-Day moving average. 

loss of smellcasesdeaths
23 Jan 2020200
24 Jan 2020200
25 Jan 2020100
26 Jan 2020100
27 Jan 2020100
28 Jan 2020100
29 Jan 2020100
30 Jan 2020200
31 Jan 2020200
1 Feb 2020200
2 Feb 2020200
3 Feb 2020210
4 Feb 2020210
5 Feb 2020110
6 Feb 2020110
7 Feb 2020110
8 Feb 2020210
9 Feb 2020200
10 Feb 2020100
11 Feb 2020200
12 Feb 2020200
13 Feb 2020200
14 Feb 2020200
15 Feb 2020100
16 Feb 2020100
17 Feb 2020100
18 Feb 2020110
19 Feb 2020110
20 Feb 2020110
21 Feb 2020120
22 Feb 2020230
23 Feb 2020230
24 Feb 2020230
25 Feb 2020230
26 Feb 2020140
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28 Feb 2020140
29 Feb 2020140
1 Mar 2020170
2 Mar 20201121
3 Mar 20201181
4 Mar 20201272
5 Mar 20201382
6 Mar 20201562
7 Mar 20202753
8 Mar 202021034
9 Mar 202021543
10 Mar 202022184
11 Mar 202022835
12 Mar 202023776
13 Mar 202024947
14 Mar 202026478
15 Mar 2020292810
16 Mar 20202120713
17 Mar 20203159315
18 Mar 20203221623
19 Mar 20204298632
20 Mar 20205392843
21 Mar 20207505757
22 Mar 202011629772
23 Mar 202025749092
24 Mar 2020358662119
25 Mar 2020439975152
26 Mar 20204811748191
27 Mar 20205213559247
28 Mar 20205715228311
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30 Mar 20204718092455
31 Mar 20204019853567
1 Apr 20203621900684
2 Apr 20203423540823
3 Apr 20203125186950
4 Apr 202029268591091
5 Apr 202027269661263
6 Apr 202026288721416
7 Apr 202025296511575
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9 Apr 202022311731864
10 Apr 202021313031987
11 Apr 202020312502081
12 Apr 202018312642080
13 Apr 202017307412108
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